Home / 140,212.75-209,983.84-80,868.51

Finding the Fourth Proportional to 140,212.75, 209,983.84 and 80,868.51

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Solution

The fourth proportional to 140,212.75, 209,983.84 and 80,868.51 is: 121,109.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,212.75 : 209,983.84 = 80,868.51 : x
  2. Step 2: Convert to fraction form
    140,212.75/209,983.84 = 80,868.51/x
  3. Step 3: Cross multiply
    140,212.75x = 209,983.84 × 80,868.51
  4. Step 4: Simplify right side
    140,212.75x = 16,981,079,275.27
  5. Step 5: Solve for x
    x = 16,981,079,275.27/140,212.75
  6. Step 6: Final answer
    x = 121,109.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.